Question:
this thing runs good out of the water hooked up to a hose or in neutral in the water, but in gear in water it just wont throttle up, you might get up to 5 mph wide open. just bought it and the guy i got it from just used it a couple of months ago and it went great, skiing and such. can i get a clue on this please?..thanks
Answers:
replace every bit of fuel line you have, also the fuel line fittings, especially the ones on the tank, replace everything, trust me, i have the #1 cylinder to prove it, if this doesnt work come back to me
anyone who knows companies who are selling boats in asia?
major tune-up. check compression-100#+. check fire on six. if this is ok clean 3 carbs. thoroughly, set primary and max. timing and hang on. those old stack six's can be a lot of fun. don't spend too much money on it though, it's pretty old.Queensland Weekender Sat 4th Nov?
Sync and Link the engine and check the prop.99% of the time when this situation is experienced the cause is gummed up high speed jets in the carbs. 1975 was the first year Mercury introduced the back draft carburetor. Submerging the prop in the lake produces back pressure. It will run all day long on the muffs. Under a load your motor is starving for fuel. You stated it ran like a champ a couple of months ago. Carbs get gummed up from bad fuel sitting in them for that length of time. Clean the carbs man ! Every thing else is fine. Youv'e got yourself a good motor there. JEEZZzzz!
Can someone tell me what an air draught is on a yacht please?
FIRST OF ALL ARE YOU GOING 4000-5000 RPMS WHEN YOU ARE GOING 5 MPHS? IF SO YOU HAVE SPUN THE HUB. THAT IS COMMON ON THE 115 PROPS.where Can I find a wiring diagram for 1981 Johnson outboard control boxa/?
If your engine will not rev up when you advance the throttle then this answer is not going to help you. I can't tell from your question if this is the case or not. But------ in the water-------if the engine is revving up when you advance the throttle but you aren't going anywhere with the throttle wide open----------you have a spun hub in the propeller. The center hub of the propeller is splined to fit the propshaft. This splined hub has a neoprene belt moulded to it that is larger than the centerline hole in the prop. This is press fit into the propeller and is designed to slip if the prop strikes something to hopefully prevent damage to the engine by allowing the prop to slip. Over time, this becomes worn and the prop beginss to slip by itself bit by bit until--------it won't work anymore. If you are only getting 5 mph wide open, I bet this is the problem. Take you prop to any good marine dealer for repair. If the prop is an aluminum prop, it will probably be cheaper to buy a new one. If stainless steel, have it re-hubbed. This is not a problem with power, it is a problem with power transmission. The propshaft is spinning but the prop is not.More Questions & Answers ...
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